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#### Ring Band Parameters

Feature Extraction - Ring Band

The Ring Band area is used to calculate the feature’s projection plane and normal vector. The feature data is projected up into the ring band's plane. The following Ring Band controls are used to accomplish feature extraction for circles, round slots and square slots:

Enable - When this option is selected, the Ring Band options take effect.

The following default values are used when Auto Circle, Auto Round Slot, and Auto Square Slot are disabled:

- Inner Offset = 0.4x the theoretical diameter value

- Outer Offset = Inner Offset value + 3mm

Inner Offset - Provides the offset from the theoretical feature radius or form for the inner edge of the ring band. This value is expressed in measurement routine units and must be greater than or equal to zero (a value of zero means an inner edge of the ring band coincides with the feature nominal.) See Image below.

Outer Offset - Provides the offset from the theoretical feature radius or form for the outer edge of the ring band. This value is expressed in measurement routine units and must be greater than the Inner Offset value. See Image below.

(A) Ring band Outer Edge

(B) Ring Band Inner Edge

(C) Feature Theoretical value

(D) Outer Offset

(E) Inner Offset